Worn Powerstone [Commander 2018] Friday Night Magic 2007 where X is the number

where X is the number of Islands you control

it enters the battlefield tapped

Set: Kaladesh Prerelease Promos Type: Land Rarity: Rare Blooming Marsh enters the battlefield tapped unless you control two or fewer other lands

Set: Scars of Mirrodin Type: Legendary Artifact Rarity: Mythic Cost: {6} {4}

sacrifice it unless you pay its echo cost

Worn Powerstone [Commander 2018] Friday Night Magic 2007 where X is the numberSet: Commander 2018 Type: Artifact Rarity: Uncommon Cost: {3} Worn Powerstone enters the battlefield tapped. {T}: Add {C}{C}. Even a fragment of a powerstone contains within it not just energy, but spacevast dimensions trapped in fragile crystal.